Again, if you want to follow the Lydiard type program, you will peak gradually. You would pick the race(s) and count back. Is the race at the end of April THE race or is it the beginning of the races? That sounds rather early... Suppose you want to "peak" the second week of June; even being at full sharpness in April would be too early. Of course, you can "peak" at the end of April and try to hold the peak till June but that all depends on your background of training; that's full 7-weeks. It also depends on whether you'd be racing every week or once in a while.
Either way, you have already done 4 weeks of hill phase; you need to move on (missing 1 weeks, again, means next nothing). As HRE stated, however, it's silly to "taper" or "peak" for this Saturday. You seem to already understand that you're not sharp so you cannot expect the best performance. There's nothing wrong with using some races as a part of training. You just have to understand what that particular race stands in the scheme of whole program. With your calf problem (you're the one who said you have tight calf problem, right?), it might even be better to do time trial / tempo type of sharpening instead of conventional intervals. Either way, you need to lay out which races you would like to participate and which races you actually would like to do well and shuffle day-to-day training accordingly.
One other word of causiton would be; you realize once you stard doing more exacting workouts like repetitions and time trials and some races, your long run should be at very easy effort. There's nothing wrong with pushing the effort during conditioning but to continue to do so once you start hard anaerobic training can be fatal. 14 miles sounds okay but, if you do it at 6:20 pace, it's only about 1:30 or less. Slow down a bit and go for an easy 1:45~2hour jog.
How did I do, HRE? By the way, wouldn't that be "inscrutable" instead of "incrutable"? Am I not the dumb foreigner? ;o) I love it when I correct your language...